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Sloped belts and filters, laid by a 45° drag (t40)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-25 23:17:55 -04:00
co-authored by Claude Opus 5.5
parent 24eb9559f8
commit e19cb784d2
26 changed files with 531 additions and 110 deletions
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src/ui/previews.js
+14 -3
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@@ -15,7 +15,8 @@ function drawGrid(cbx, cby, radius) {
}
function previewColor(code, v) {
if (isWall(code)) { const m = WALL_OF[v]; return `${COLR[m]},${COLG[m]},${COLB[m]}`; }
if (code === BP_FILTER) return '96,100,110';
if (isFilter(code)) return '96,100,110';
if (isBelt(code)) return '110,114,124';
return { [BP_BELT]: '110,114,124', [BP_TUBE]: '120,132,150', [BP_SHAFT]: '160,118,70', [BP_GRATE]: '170,90,66', [BP_GATE]: '160,84,64', [BP_PIPE]: '176,112,72', [BP_PUMP]: '104,122,142', [BP_OUTLET]: '170,106,66' }[code] || '120,200,190';
}
// Air swirls into the pickup ring or spreads from the nozzle toward the cursor.
@@ -107,7 +108,7 @@ function drawPreviews() {
if (P.kind === 'block') {
const v = pieceV(P);
col = previewColor(code, v);
cells = GAME.drag ? (modShift() ? blockRect(GAME.drag.bx, GAME.drag.by, b.bx, b.by) : blockLine(GAME.drag.bx, GAME.drag.by, b.bx, b.by, isWall(code) || code === BP_TUBE)) : [[b.bx, b.by]];
cells = GAME.drag ? (modShift() ? blockRect(GAME.drag.bx, GAME.drag.by, b.bx, b.by) : blockLine(GAME.drag.bx, GAME.drag.by, b.bx, b.by, isWall(code) || isSlopeBelt(code) || code === BP_TUBE)) : [[b.bx, b.by]];
const dd = GAME.drag ? dragDirFor(P, GAME.drag, b) : -1;
if (dd !== GAME.dragDir) { GAME.dragDir = dd; hudDirty = true; }
const dIdx = dd >= 0 ? dd : (GAME.pieceDir[P.id] || 0);
@@ -126,7 +127,7 @@ function drawPreviews() {
previewBlock(code, x, y, w, h, true, P.id === 'tube' ? dIdx : -1, bx, by, planned); ctx.setLineDash([]);
if (P.dirs && (P.id === 'belt' || P.id === 'tube' || P.filter || P.id === 'pump' || P.id === 'outlet')) {
// a chevron on every block, pointing the way it will carry (or pump, or pour)
const [dx, dy] = P.id === 'tube' ? TUBE_DIRS[dIdx] : P.id === 'pump' ? PUMP_V[dIdx] : P.id === 'outlet' ? OUTLET_V[dIdx] : [[-1, 0], [1, 0]][dIdx];
const [dx, dy] = isSlopeBelt(code) ? [dIdx ? 1 : -1, beltGrade(code) * (dIdx ? 1 : -1)] : P.id === 'tube' ? TUBE_DIRS[dIdx] : P.id === 'pump' ? PUMP_V[dIdx] : P.id === 'outlet' ? OUTLET_V[dIdx] : [[-1, 0], [1, 0]][dIdx];
const cx = x + w / 2, cy = y + h / 2, k = w * 0.22, px_ = -dy, py_ = dx;
ctx.strokeStyle = 'rgba(20,16,12,0.55)'; ctx.lineWidth = Math.max(2, zp * 0.9); ctx.lineCap = 'round'; ctx.lineJoin = 'round';
const chev = () => { ctx.beginPath(); ctx.moveTo(cx - dx * k * 0.6 + px_ * k, cy - dy * k * 0.6 + py_ * k); ctx.lineTo(cx + dx * k * 0.7, cy + dy * k * 0.7); ctx.lineTo(cx - dx * k * 0.6 - px_ * k, cy - dy * k * 0.6 - py_ * k); ctx.stroke(); };
@@ -206,6 +207,16 @@ function previewBlock(code, x, y, w, h, stroke = false, direction = -1, bx = -1,
if (stroke) ctx.stroke(); else ctx.fill();
ctx.restore(); return;
}
if (isSlopeBelt(code) && isFilter(code)) {
ctx.beginPath();
if (beltGrade(code) < 0) {
ctx.moveTo(x, y + h); ctx.lineTo(x + w, y); ctx.lineTo(x + w, y + h * 0.25); ctx.lineTo(x + w * 0.25, y + h);
} else {
ctx.moveTo(x, y); ctx.lineTo(x + w, y + h); ctx.lineTo(x + w * 0.75, y + h); ctx.lineTo(x, y + h * 0.25);
}
ctx.closePath(); if (stroke) ctx.stroke(); else ctx.fill(); return;
}
code = slopeShape(code);
if (!isSlope(code)) { if (stroke) ctx.strokeRect(x, y, w, h); else ctx.fillRect(x, y, w, h); return; }
const right = code === BP_SLOPE_BR || code === BP_SLOPE_TR, above = code >= BP_SLOPE_TL;
ctx.beginPath();